Time Reversal

Time reversal may refer to:

  • In physics, T-symmetry - the study of thermodynamics and the symmetry of certain physical laws where the concept of time is reversed — i.e. where a mirror (reverse) transformation is applied to a forward direction time state.
  • Time Reversal Signal Processing, a signal processing technique popular in acoustics, and currently being applied to electromagnetics, that results from the reversal in time of a system's response signal
  • Time travel, theorised and speculative concepts about travelling physically through time

Famous quotes containing the words time and/or reversal:

    “O native country, repossessed by thee!
    For, rather than I’ll to the West return,
    I’ll beg of thee first here to have mine urn.
    Weak I am grown, and must in short time fall;
    Give thou my sacred relics burial.”
    —Robert Herrick (1591–1674)

    “Perversity depends on reversal and substitution.”
    —Mason Cooley (b. 1927)